Veterinary obstetrical forceps.



No. 865,721. PATENTED SEPT. 10, 1907. G. N. MGGONEG'AL. VETERINARYOBSTETRIOAL FORGEPS.

APPLICATION FILED JUNE 26. 1906.

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Qwi bme ooea v GUY N. MCGONEGAL, OF JUNIATA, NEBRASKA.

VETERINARY OBSTETRICAL FORCEPS.

Specification of Letters Patent.

Patented Sept. 10, 1907.

Application filed June 26, 1906. Serial No. 323,475.

To all whom it may concern:

Be it known that I, GUY 1 MCGONEGAL, a citizen of the United States,residing at Juniata, in the county of Adams and State of Nebraska, haveinvented a new and useful Veterinary Obstetrical Forceps, of which thefollowing is a specification.

The invention relates to improvements in veterinary obstetrical forceps.

The object of the present invention is to improve the construction ofveterinary obstetrical forceps, and to provide a surgical instrument ofthis character, which will be simple and inexpensive in construction,and in which none of the operating mechanism will be arranged exteriorlyof the instrument, so that the latter will present a smooth exterior andnot injure either an animal or its mother.

Another object of the invention is to provide a vet erinary obstetricalinstrument, which may be readily operated to open and close it, andwhich when adjusted will not accidentally slip.

With these and other objects in view, the invention consists in theconstruction and novel combination of parts hereinafter fully described,illustrated in the ac companying drawing, and pointed out in the claimshereto appended; it being understood that various changes in the form,proportion, size and minor details of construction, within the scope ofthe claims, may be resorted to without departing from the spirit orsacrificing any of the advantages of the invention.

In the drawing:1'igure 1 is a side elevation of a veterinary obstetricalinstrument, constructed in accord ance with this invention and shownclosed. Fig. 2 is a longitudinal sectional view of the same, theresilient jaws or members being open. Fig. 3 is an enlarged detailsectional view, illustrating the manner of connecting the slidable crosshead with the resilient jaws or members. Fig. 4 is a sectional view onthe line l4 of Fig. 3. Fig. 5 is an end view, the jaws or members beingclosed.

Like numerals of reference designate corresponding parts in all thefigures of the drawing.

1 and 2 designate resilient jaws or members, constructed of rods ofsteel, wire or other resilient material and arranged in pairs, andsecured at their end portions to a guide tube 3 at the exterior thereof.The jaws or members, which are bowed longitudinally, present outerconvex edges, and their outer terminals are bent inwardly to form bluntengaging points 4. The inner attached portions of the spring wire jawsmay be secured to the guide tube in any desired manner, and the innerends of the jaws 1 are bent laterally and project from opposite sides ofthe guide tube to provide a pair of grips 0r handles 5, which areadapted to be grasped by the fingers.

The guide tube receives a slidable operating rod 6, provided at one endwith a head 7, and having its other end 8 secured in a perforation 9 ofa slidable cross head 10, consisting of a block or plate ofapproximately rectangular form. The cross head is recessed at its sideedges to provide projecting corner portions 11, which have slots 12 forthe reception of shank portions 13 of pivotal guides 14. The guides 14are each preferably constructed of a single piece of metal, which iscentrally bent to form a circular eye, and the terminals of the metalare fitted together to form a straight shank, which is secured in theslot 12 by means of a pivot 15, extending across theslot, and piercingthe shank portion and the sides of the projecting corner portion of thecross head, as clearly shown in Fig. 4 of the drawing. By thisconstruction, the guides are adapted to adjust themselves to theposition of the bowed spring wire jaws, as the cross wire is movedlongitudinally of the instrument by the operating rod (3 to open andclose the said jaws. The shank portions are rounded at the ends, asclearly shown in Fig. 2 of the drawing, and they present smooth outerfaces.

The instrument is placed between the first and second fingers, whichengages the laterally projecting grips 5, and the operating rod may thenbe readily moved inwardly by the thumb: This will close the instrument,which may be securely grasped and firmly held at any adjustment. Theoperating rod is drawn outwardly to open the instrument, which isdesigned for use on various animals.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent, isz- 1. A veterinary obstetrical instrumentcomprising a longitudinal guide tube, a plurality of rods secured attheir inner portions to the tube, the inner terminals of two of the rodsbeing bent outwardly from the guide tube to form handles, said rodsbeing resilient and bent inwardly at their outer engaging ends andarranged to be brought close together by the closing movement of theinstrument, an operating rod passing through the tube, a head carried bythe rod, and eyes pivotally connected to the head and slidable on therods to open and close the instrument.

2. A veterinary obstetrical instrument comprising a plurality of jaws, aslidable operating rod, a cross head carried by the rod, and oscillatoryeyes pivoted to and 10 at their inner sides with shanks arranged in theslots of the cross head, and pivots disposed transversely of the slotsand piercing the cross head and the shanks of the In testimony, that Iclaim the foregoing as my own, I

have hereto aifixed my signature. in the presence of two 15 witnesses.

GUY N. MCGONEGAL.

Witnesses A. A. ARMITAGE, C. E. 'Lmrox.

